chore(CRWA): convert to ESM

see: redwoodjs#8159

packages/create-redwood-app/build.mjs

@@ -9,6 +9,7 @@ const result = await esbuild.build({
   bundle: true,
   minify: true,
 
+  format: 'esm',
   platform: 'node',
   target: ['node18'],
   packages: 'external',

packages/create-redwood-app/package.json

@@ -1,6 +1,7 @@
 {
   "name": "create-redwood-app",
   "version": "6.0.7",
+  "type": "module",
   "repository": {
     "type": "git",
     "url": "https://github.com/redwoodjs/redwood.git",

packages/create-redwood-app/src/create-redwood-app.js

@@ -14,15 +14,16 @@ import yargs from 'yargs/yargs'
 
 import { RedwoodTUI, ReactiveTUIContent, RedwoodStyling } from '@redwoodjs/tui'
 
-
+// In ESM, for relative paths, the extension is important.
+// See https://nodejs.org/dist/latest-v18.x/docs/api/esm.html#mandatory-file-extensions.
 import {
   UID,
   startTelemetry,
   shutdownTelemetry,
   recordErrorViaTelemetry,
   packageName,
   packageVersion,
-} from './telemetry'
+} from './telemetry.js'
 
 const INITIAL_COMMIT_MESSAGE = 'Initial commit'
 
@@ -223,7 +224,7 @@ async function executeCompatibilityCheck(templateDir) {
  */
 function checkNodeAndYarnVersion(templateDir) {
   return new Promise((resolve) => {
-    const { engines } = require(path.join(templateDir, 'package.json'))
+    const { engines } = fs.readJSONSync(path.join(templateDir, 'package.json'))
 
     checkNodeVersionCb(engines, (_error, result) => {
       return resolve([result.isSatisfied, result.versions])